Directional symbol (5)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
arrow
'directional symbol' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for arrow that I've seen before include "Fletcher's production" , "Pointed projectile" , "Projectile from bow" , "marker" , "It caught Harold's eye" .)